Hillsborough County recorded 22 new locally acquired dengue cases during the final week of October, marking the lowest weekly increase since a local state of emergency was declared in late September, according to WUSF. The slowdown follows a peak of 53 new cases during the week ending September 26, bringing the county’s total to 407 infections since the outbreak began in July.
Weekly Count Drops Below 25
- Epidemiological Trajectory: The weekly count dropped below 25 for the first time since September, signaling a potential deceleration in local transmission by Aedes mosquitoes.
- Administrative Response: County Administrator Bonnie Wise extended the local state of local emergency through November 12, maintaining emergency powers to authorize accelerated ground and aerial mosquito treatments under Chapter 252, Florida Statutes, as reported by hcfl.gov.
- Diagnostic Surveillance: Health officials emphasize that reported figures remain undercounts, as many infected individuals exhibit mild symptoms or remain entirely asymptomatic during the typical two-week incubation period following an infected mosquito bite.
Vector Control Operations and Regional Surveillance Across the Bay
Mosquito management crews continue intensified treatments by air and ground across Hillsborough County, focusing heavily on designated hotspots such as a populated area northeast of downtown Tampa. County surveillance data indicates ongoing dengue virus activity within the local mosquito population, prompting close coordination with the Florida Department of Health to execute targeted public education and chemical treatments.
Across the bay in Pinellas County, officials reported 13 additional cases for a total of 80 infections. Pinellas County Mosquito Control has similarly deployed aerial treatments targeting mosquito larvae in St. Petersburg and Clearwater, operating under its own local state of emergency issued on September 24.
| County | Latest Weekly Cases | Total Locally Acquired Cases | State of Emergency Expiration |
|---|---|---|---|
| Hillsborough | 22 (Oct. 25-31) | 407 | November 12 |
| Pinellas | 13 (Oct. 25-31) | 80 | Active |
State Arbovirus Surveillance Update Attributes Infections to Counties
The latest state arbovirus surveillance update attributes nearly all of the 39 newly reported statewide infections to Hillsborough and Pinellas counties, alongside three confirmed in Miami-Dade and one in Orange. Florida’s cumulative total has reached 524 locally acquired cases since July, representing the largest domestic outbreak in the United States in decades and significantly surpassing previous figures such as the 199 cases recorded in 2023 and 62 cases last year.
In addition to locally acquired transmission, the state database recorded 27 new international-travel-associated dengue cases during the week of October 25-31, bringing the annual travel-related total to 382. The vast majority of these travel-associated infections were identified in Miami-Dade County, driven by individuals returning from regions where the virus is endemic, such as Puerto Rico.
Dengue Virus Manifests Through Acute Febrile Illness
Dengue virus manifests clinically through acute febrile illness accompanied by severe myalgia (muscle aches), headaches, arthralgia (joint pain), and occasional maculopapular rashes.
References
- Florida Department of Health. Arbovirus Surveillance Weekly Reports. Available via Florida Department of Health Arbovirus Surveillance.
- Hillsborough County Government. Dengue Fever Prompts Hillsborough to Extend State of Local Emergency.
- Pinellas County Government. Mosquito Control Conducts Aerial Larvae Treatments.
Disclaimer: This reporting is intended for informational and educational purposes based on current public health data and official municipal releases. It does not constitute formal medical diagnosis or epidemiological consultation.
